RtpPacket class introduced.

webrtc/modules/rtp_rtcp/source/rtp_header_extension.cc

 /*
  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 94 matching lines @@
   std::map<uint8_t, HeaderExtension*>::const_iterator it =
       extensionMap_.find(id);
   if (it == extensionMap_.end()) {
     return -1;
   }
   HeaderExtension* extension = it->second;
   *type = extension->type;
   return 0;
 }
 
+RTPExtensionType RtpHeaderExtensionMap::GetType(uint8_t id) const {
+  auto it = extensionMap_.find(id);
+  if (it == extensionMap_.end()) {
+    return kInvalidType;
+  }
+  return it->second->type;
+}
+
 int32_t RtpHeaderExtensionMap::GetId(const RTPExtensionType type,
                                      uint8_t* id) const {
   assert(id);
   std::map<uint8_t, HeaderExtension*>::const_iterator it =
       extensionMap_.begin();
 
   while (it != extensionMap_.end()) {
     HeaderExtension* extension = it->second;
     if (extension->type == type) {
       *id = it->first;
       return 0;
     }
     it++;
   }
   return -1;
 }
 
+uint8_t RtpHeaderExtensionMap::GetId(RTPExtensionType type) const {
+  for (auto kv : extensionMap_) {
+    if (kv.second->type == type)
+      return kv.first;
+  }
+  return kInvalidId;
+}
+
 size_t RtpHeaderExtensionMap::GetTotalLengthInBytes() const {
   // Get length for each extension block.
   size_t length = 0;
   std::map<uint8_t, HeaderExtension*>::const_iterator it =
       extensionMap_.begin();
   while (it != extensionMap_.end()) {
     HeaderExtension* extension = it->second;
     if (extension->active) {
       length += extension->length;
     }
@@ skipping 78 matching lines @@
   assert(map);
   std::map<uint8_t, HeaderExtension*>::const_iterator it =
       extensionMap_.begin();
   while (it != extensionMap_.end()) {
     HeaderExtension* extension = it->second;
     map->Register(extension->type, it->first, extension->active);
     it++;
   }
 }
 }  // namespace webrtc